Myth check: "An expensive mic will make your recordings sound professional"

The claim: buy an expensive microphone and your recordings will sound professional.

Verdict: misleading. A better mic can help, especially when you move up from a poor one. But each step up in price buys less, the right mic depends on the source, and an untreated room will undo whatever the capsule gives you.

Where it spread

It shows up as a question more often than a slogan, which tells you how deep the assumption runs. Sound On Sound ran a reader letter titled, bluntly, How do I know a mic is worth the money?. On the HomeRecording.com forum, a 2007 thread asks whether to invest in an awesome mic or better sound treatment, with the poster weighing a Rode NT1-A plus Auralex corner pads against a pricier AT4047 with no treatment. One reply defends the mic: "a really good mic will be with you for a long time."

What the evidence says

Returns shrink fast. Sound On Sound's Hugh Robjohns says the jump from a budget mic to a mid-range one is usually obvious, but each step after that brings smaller, less certain gains. The test he gives is simple: are you hearing an improvement over your current mic, and does the price justify it?

Expensive mics are accurate, but vocals aren't about accuracy. Robjohns says "the most expensive mics are generally pretty accurate", then adds that "recording vocals is rarely about accuracy. It's more to do with flattery." For a mic used on one voice, "finding a mic that suits your voice is the prime directive", and that mic may or may not be the most expensive. He notes that "U2's Bono famously records his vocals using a Shure SM58."

What the money does buy. The same answer credits pricier mics with internal shock-mounting to reduce handling noise, more thorough testing, longer life and easier servicing. Cheaper mics can be "great on some things but terrible on others" and often need a lot of EQ in the mix.

The room comes first. Voice actor Bob Souer writes that "the best microphone and preamp in the world will sound like garbage in a room that's not treated properly." A commenter on that post, Dan Friedman, says: "More often, I tell people that they need to fix something in their space than I tell them they need to get a different microphone." In the forum thread, one reply puts it as "Get the sources sounding good first (which includes the environment they're recorded in)."

What we think

"Professional" is the word doing the damage. A pro recording is a chain: performance, room, placement, mic, preamp, then the mix. A mic upgrade improves one link, and it's rarely the weakest one in a bedroom studio. Our read, as inference: if your recordings sound boxy or harsh, a pricier condenser will usually capture that boxiness more faithfully, not fix it.

So spend in order. Move off a genuinely bad mic to a decent mid-range one, because that step is the one Sound On Sound says you'll clearly hear. Then put money and time into the room and mic placement before the next upgrade. When you do go shopping again, choose by matching the mic to the voice or instrument in a test, not by price tag. The SM58 on Bono's vocals is the reminder: the right mic beats the expensive one.